Grid bed



FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention in an up position;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a bottom view of the present invention;

FIG. 6 is a side view of the present invention;

FIG. 7 is an end view of the present invention; and,

FIG. 8 is an isolated close up view of a portion of the present invention.

The portions shown in broken lines are not part of the design as claimed. 

The ornamental design for a grid bed, as shown and described. 